Medium for dehydrating cut oils



Patented Feb, 7, 13-.

Uhlt TIE PHILIP KAPLAIN, 0F BBOOYN, NEW YORK, ASSIGNOR TO THE DEHYDRO COMPANY,

OF TULSA, O

OMA, A CORPORATION OF OKLAHO mom FOB DEHYDRATING CUT OILS No Drawing. Application filed April 22,

In the dehydrating of cut oils I have dis covered that it is desirable to produce a medium for accomplishing this purpose that shall have certain desirable and I might say necessary qualifications. The medium should be miscible in water and should have such aflinity for the water that even a small quantity of the medium will take up or cause the ingathering of all of the water in the cut oil emulsion or solution and it is therefore necessary that the material be added to the cut oil either as an emulsion or that it become immediately emulsifiable therein and the material should also be miscible in petroleum so as to mix freely therewith and break the bond or surface tension which exists between the oil and water in thecut oil emulsion.

To operatemost successfully a dehydrating compound must have a ver low freezing point so that it will remain u1d in all temperatures to which cut oil emulsions are subjected andI believe that in the product that I am about to describe I have discovered an emulsion breaker that meets all requirements far better than emulsion breakers so far produced.

My material consists of sulphonated linseed oiland I fully realize the difliculties encountered in sulphonating linseed oil, the primary difiiculty of which is the viscous nature of the mass in certain steps of the operation, in fact it has been found that 1111- seed oil will actually ball up or form itself into a gelatinous mass when under the necessary temperature conditions concentrated sulphuric acid is added thereto and to overcome this great difiiculty I have found it desirable to add to the linseed oil a solvent such as carbon tetrachloride or one of the chloroform group or one of the benz ne group, or possibly turpentine, adding this solvent prior to sulphonation and later removing the solvent or the excess portions thereof b distillation or by other means, the remova only taking place however after sulphonatlon 1s completed.-

sulphonated linseed 011, like other sulphonated oils is soluble in water, but I believe that in the use of this material in cut oil emulsions it is desirable to introduce it into the 1931. Serial No. 582,127.

cut oil as an emulsion and therefore I may add a quantity of raw linseed oil to the sulphonated linseed oil and thereafter add wa- In completing a cut oil treating agent as. a

such I may add linseed oil to mineral oil or fish oil or other vegetable oils. I have found that it is desirable to sulphonate to the highest possible degree although in some so-called free water emulsions sulphonated linseed oil may be mixed with other raw oils, with or without the addition of water to complete the emulsion and in so-called tight emulsions the water may be omitted from my mixture either wholly or in part, thus increasing the penetration of the mixture and causing it to complete its emulsification by taking up the water from the cut oil mixture.

It is my belief that the art of sulphonating oils is sufiiciently well understood to make it unnecessary for me to describe this operation in detail, except to say that it is desirable and I consider it necessary to add a solvent to the oil to make the sulphonation commercially possible. To what extent this solvent will be removed will of course be determined by the emulsions comprising sulphonated linseed oil and raw linseed oil.

2. A material for separating water and oil emulsions comprising sulphonated linseed oil,

5 a relatively small amount of a retained solvent and raw linseed oil. 

